Note 1 - Nature of Operations and Summary of Significant Accounting Policies: Property and Equipment: Schedule of Depreciation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Depreciation	$ 263	$ 259
Property, Plant and Equipment, Gross	10,499	11,676
Less accumulated depreciation and amortization	(6,104)	(7,149)
Property and equipment, net	4,395	4,527
Building and Building Improvements
Property, Plant and Equipment, Gross	$ 3,065	3,065
Building and Building Improvements | Minimum
Property, Plant and Equipment, Useful Life	5 years
Building and Building Improvements | Maximum
Property, Plant and Equipment, Useful Life	40 years
Machinery and Equipment
Property, Plant and Equipment, Gross	$ 4,554	5,582
Machinery and Equipment | Minimum
Property, Plant and Equipment, Useful Life	3 years
Machinery and Equipment | Maximum
Property, Plant and Equipment, Useful Life	8 years
Office Equipment
Property, Plant and Equipment, Gross	$ 630	779
Office Equipment | Minimum
Property, Plant and Equipment, Useful Life	3 years
Office Equipment | Maximum
Property, Plant and Equipment, Useful Life	8 years
Land {1}
Property, Plant and Equipment, Gross	$ 2,250	$ 2,250